Number of (n+1)X4 0..2 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.
A209955
Number of (n+1)X4 0..2 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.
Terms
- a(0) =4521a(1) =260201a(2) =14922177a(3) =856216289a(4) =49124545369
External references
- oeis: A209955